75 Series Landcruiser Brakes
Submitted: Monday, Dec 29, 2003 at 14:37
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Chris Gough
G'day all,
I'm currently having a problem with a 1999 75 series troop carrier. The brake warning light wont go out.
The owners manual states this warning light is activated when the hand brake is engaged, the brake fluid level is low or there is a brake booster vacuum problem. I have checked the handbrake, brake fluid and brake booster to find them all functioning. I then disconnected the fluid level switch, the vacuum switch and the handbrake switch one at a time in an attempt to isolate the cause of the problem and the light still does not go out.
I guess the question I need to ask here is are there more than three switches that relate to the brake warning light and if so where are the ones I have not mentioned above?
Any help would be greatly appreciated.
Reply By: Dave from Fraser Coast 4WD Club - Monday, Dec 29, 2003 at 23:09
Monday, Dec 29, 2003 at 23:09
don't know if this helps, but
mine comes on when the idle is low, or if the truck is about to stall
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Follow Up By: Chris Gough - Tuesday, Dec 30, 2003 at 08:51
Tuesday, Dec 30, 2003 at 08:51
Thanks for your advice Dave.
The light coming on at low engine rpm may be due to the vacuum pump slowing down sufficiently for the vacuum switch to turn the warning light on. This same switch may cause the light to stay on continuously, like was the case with my vehicle, if there was a leak in a vacuum hoses or a faulty vacuum pump but I'd already tested vacuum to the booster and there was plenty and no leaks in any of the hoses.
I had a closer look at the situation last night. Again, I couldn't find a third switch on the brake system so I started looking for an electrical fault.
Five minutes later I found the wire that runs to the handbrake switch (and two other unused wires) had been trapped under the driver's
seat slider frame when the
seat had been taken out and later replaced. The vehicle was ‘tarted up’ a little inside before I bought it and I think the last owner removed the seats before he let loose with a can of white paint to cover a few scratches in the back. Anyway, 4 bolts to remove the
seat and five minutes with the soldering iron and I'm back in business again.
It’s nice when it doesn’t cost anything to fix a problem I originally thought was going to break the bank. Especially at Christmas time when the bank is already broke.
Thanks again Dave!!!
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